Feature:1. POLISHED LENS: The optical glass lens is carefully polished, and the uniform and fine coating on the surface can ensure quality of lens2. ADAPTER SIZE: The single prism has a brass threaded adapter that can be attached to any 5 or 8in x 11 threaded rod or tripod3. WEAR RESISTANT AND DURABLE: The prism is equipped with excellent plastic shell protection to ensure that the glass prism part is protected from wear and extend the life4. SCOPE OF APPLICATION: Single tilt prism can be used in tunnels, subways, mines, highways and other inspection, suitable for measuring instruments such as for trimble5. WIDE RANGE OF USES: Land surveying prism is widely used in subway, railway, tunnel, dam, steep slope and other industriesSpecification:Item Type: Single Tilt PrismMaterial: ABSGlass Diameter: Approx. 25.4mm or 1inPrism Constant: -17mmApplication: Tunnel, subway, mine, highway and other detection, suitable for Trimble and other measuring instrumentsApplication: Widely used in subway, railway, tunnel, dam, steep slope and other industries.Package List:1 x Single Tilt Prism